Certificate: Information Technologies Operations

Course Objective:

To provide learners with the fundamental theoretical knowledge and practical skills required to understand, assemble, test, troubleshoot, and design basic electronic circuits and systems.

Target Audience:

School leavers, electronics enthusiasts, technicians-in-training, and individuals seeking a foundation for a career in electronics repair, assembly, or further engineering study.

Outline

Module 1: Basic Electronics and Circuit Theory

• Fundamental Concepts: Atomic structure, charge, current, voltage, resistance, and power.
• Ohm’s Law and Power Law: Calculations and applications.
• Circuit Analysis: Series and parallel circuits; calculating total resistance, current, and voltage.
• DC Circuit Principles: Kirchhoff’s Current Law (KCL) and Kirchhoff’s Voltage Law (KVL).
• Energy and Power: Understanding power dissipation and energy consumption in circuits.
• Introduction to Capacitance and Inductance: How capacitors and inductors work in DC circuits (charging/discharging).

Module 2: Components and Devices

• Passive Components: Resistors (types, color codes, values), Capacitors (types, values), Inductors.
• Semiconductor Fundamentals: Conductors, insulators, and semiconductors.
• Diodes: PN junction theory, rectifier diodes, LEDs, Zener diodes.
• Transistors: Bipolar Junction Transistors (BJTs) as switches and amplifiers; introduction to MOSFETs.
• Other Devices: Switches, relays, transformers, fuses, circuit breakers.
• Sensors and Actuators: Introduction to components like LDRs, thermistors, buzzers, and motors.

Module 3: Digital Electronics and Microcontrollers

• Digital Fundamentals: Difference between analog and digital signals; binary numbers.
• Logic Gates: AND, OR, NOT, NAND, NOR, XOR; truth tables and simple gate ICs.
• Introduction to Microcontrollers: Overview of a microcontroller unit (MCU) vs. a microprocessor.
• Programming Fundamentals: Basic coding concepts (variables, loops, conditional statements) for a specific platform (e.g., Arduino).
• Interfacing: Using a microcontroller to read inputs (e.g., from a button or sensor) and control outputs (e.g., LEDs, motors).

Module 4: Testing and Measurement Techniques

• Multimeters: Accurate measurement of voltage, current, and resistance; continuity testing.
• Oscilloscopes: Understanding waveforms, measuring amplitude, frequency, and period; troubleshooting signal issues.
• Power Supplies: Using bench power supplies to provide precise voltage and current to a circuit under test.
• Function Generators: Generating test signals (sine, square, triangle waves).
• Reading Schematics: Interpreting circuit diagrams and symbols to guide testing.
• Soldering and Desoldering Techniques: Through-hole and basic surface-mount soldering skills.

Module 5: Electronics System Design and Troubleshooting

• Design Process: Defining requirements, selecting components, simulating circuits (basic introduction to software like LTSpice), creating schematics.
• PCB Basics: Introduction to Printed Circuit Boards; following a layout to assemble a PCB.
• Troubleshooting Methodology: Developing a logical, systematic approach to fault-finding (e.g., half-split method, signal tracing).
• Identifying Faults: Diagnosing common problems like open circuits, short circuits, component failures, and poor solder joints.
• Safety Procedures: Working safely with mains electricity, high voltages, and electrostatic discharge (ESD) protection.
• Documentation: Creating clear documentation for designs and repair procedures.